A61L-0001-0073 氣執(zhí)行元件(輸出部分)。對(duì)于用繼電器控制的系統(tǒng),影響系統(tǒng)可靠性的主要因素是中間繼電器組成的記憶網(wǎng)絡(luò)。對(duì)于PLC控制系統(tǒng),高可靠性的PLC取代了中間繼電器組成的記憶網(wǎng)絡(luò),克服了機(jī)械動(dòng)作式中間繼電器可靠性不高的固有毛病,使系統(tǒng)可靠性大為提高。此時(shí),與PLC自身的安全性與PLC輸入、輸出連接的"發(fā)訊元件"和"電氣執(zhí)行元件"的可靠性,己變成影響整個(gè)電氣系統(tǒng)可靠性的主要因素。提高"發(fā)訊元件"和"電氣執(zhí)行元件"可靠性的同時(shí),也就提高了PLC的安全性,通常有兩種方法:一種是選用高質(zhì)量的元器件;另一種是對(duì)這些故障率較高的元器件進(jìn)行狀態(tài)檢測(cè)和故障診斷,但都受硬件條件和經(jīng)濟(jì)條件的影響而限制了應(yīng)用范用。
PLC具有豐富的軟元件(如內(nèi)部計(jì)時(shí)器、計(jì)數(shù)器、輔助繼電器等),因此可以利用它來(lái)設(shè)計(jì)一些程序,屏蔽輸入元件的誤信號(hào),防止輸出元件的誤動(dòng)作。實(shí)用的方法有(l)采用軟硬件互鎖設(shè)計(jì),防止誤發(fā)訊和誤動(dòng)作;(2)在輸入輸出端提高配線(xiàn)的可靠性,提高PLC的安全性。
控制系統(tǒng):800xA、Advant 開(kāi)放式控制系統(tǒng),帶Master軟件、Advant 開(kāi)放式控制系統(tǒng),帶MOD 300軟件、Freelance、Melody 系列、SATT、Symphony DCI 系列、Symphony Harmony INFI 90 系列、緊湊型800、Services [英文]、Symphony Plus [英文]。
NEMATRON 100A0497 FRONT PANEL
NEMATRON 100A0509 FRONT PANEL ASSY
NEMATRON 100A0580 FRONT PANEL
NEMATRON 100A0631 EVAL
NEMATRON 110A0010 PCB
NEMATRON 110A0013 CIRCUIT BOARD
NEMATRON 110A0032 PCB
NEMATRON 110A0041 PCB
NEMATRON 1670 PANEL
NEMATRON 1C7071-BBA104SE NEMATRON
NEMATRON 1C7076-8831A-400 CONTROL DISPLAY
NEMATRON 1WS-127-F WORKSTATION
NEMATRON 1WS-3005T MINI TOUCHSCREEN
NEMATRON COS-KYBD-12X SWITCH MATRIX ASS.
NEMATRON COS-XXX3-34PAD 34 KEY REPLACEMENT PAD
NEMATRON FACEPLATE FACEPLATE
NEMATRON FDD-4020 CONTROLLER PART
NEMATRON IC5031-88310301 MONITOR
NEMATRON IC5511-86910401 COMPUTER
NEMATRON IC6051-B83102SE NEMATRON
NEMATRON IC6151-C8310000 COMPUTER
NEMATRON IC63A1-JBB1F1AF MONITOR
NEMATRON IC65A1-32610100 CONTROL COMP.
NEMATRON IC7076-8831A400 CONTROLLER/ MONITOR
NEMATRON ICC-5000-CNC COMPUTER
NEMATRON ICC-5000-PC1R COMPUTER
NEMATRON ICC-7L6-HC3 COMPUTER
NEMATRON ICC-7L6-HO2 COMPUTER
NEMATRON ICC-7L6-HS2 COMPUTER
NEMATRON ICC-8L6-HIS COMPUTER
NEMATRON ICC535-51210300 CONSOLE
NEMATRON IWS 4624/ 66 WORK STATION
NEMATRON IWS-100 WORK STATION
NEMATRON IWS-1000 WORK STATION
NEMATRON IWS-1003 WORK STATION
NEMATRON IWS-101 CRT
NEMATRON IWS-1010 TERMINAL
NEMATRON IWS-1011X WORKSTATION
NEMATRON IWS-1013-023 WORK STATION
NEMATRON IWS-102 OPERATOR STATION
NEMATRON IWS-1021 WORKSTATION
NEMATRON IWS-110 WORK STATION
NEMATRON IWS-1123 DISPLAY
NEMATRON IWS-117 PANEL CONTROL
NEMATRON IWS-120 WORK STATION
NEMATRON IWS-123 DISPLAY
NEMATRON IWS-127 WORKSTATION
NEMATRON IWS-127-CF WORKSTATION
NEMATRON IWS-127-V4 WORKSTATION
NEMATRON IWS-1501 TERMINAL
NEMATRON IWS-1503 WORKSTATION